National Factory is one of the manufacturing divisions of Refrigeration House Group for Air distribution products. The factory created niche in its field of activity. It started production of Supply and Exhaust Grilles, Ceiling Diffusers, Sand Trap Louvers & Volume Control Dampers. As the demand for the products increased in the market, Factory diversified into Air Filtration Products including HVAC high and medium efficiency bag, pleated filters, and also supplies high efficiency particulate air filters.

The clientele includes mainly Electro-Mechanical, HVAC contractors, Petrochemical companies, Ministry of Defense, Hotels, Factories, Hospitals as well as Saudi Aramco and SABIC group. National Factory maintained quality of products stringently satisfying standards set forth by international organizations according to UL 555, Seventh Edition Certified by – Underwriters Laboratory Northbrook, American Society for Heating Refrigeration Air conditioning Engineers ASHRAE, Air conditioning Refrigeration Institute ARI, Air Diffusion Council ADC, SMACNA, Engineering Testing Laboratories ETL, and ISO 9001:2000 Certified.